BMW M has supposedly started showing the new-gen M3 Sedan and M4 Coupe behind closed doors.

The two performance models will officially premiere in September, as the company has already announced, and it appears that they will be shown on the 23rd. Citing one of their readers, who saw the new M3 in person, BMWBlog reports that it will launch in the Isle of Man Green color.

The palette will also include the Toronto Red, Tanzanite Blue, Portimao Blue, Dravit Grey, Black Sapphire, Alpine White and Sao Paolo Yellow. The latter will apparently adorn the body of the M4 Coupe at launch.

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The report goes on stating that the M3 on display was in the higher output Competition spec, adorned with carbon fiber, with a blacked out kidney grille that was allegedly requested by the firm’s U.S. dealers. It also featured the optional laser headlights and carbon fiber roof with rack inserts.

Boasting sporty looks, defined by the larger bumpers and side skirts, different grille pattern, quad exhaust pipes, tiny boot lid spoilers and M-style wheels, the new M3 and M4 will have 473 HP (480 PS / 353 kW) available on tap in the standard versions, courtesy of a 3.0-liter twin-turbo straight-six.

The engine will be mated to a six-speed manual transmission, with an eight-speed auto probably offered as an option, and rear-wheel drive. The 503 HP (510 PS / 375 kW) Competition model will join the lineup, featuring an 8-speed auto and rear-wheel drive as well. Meanwhile, the xDrive all-wheel drive variant will launch later on.